Selected Conferences&Seminars, Andrew Knyazev, Math, UC Denver:

• Selected Prior to 1997
  • Fourth International Symposium on Domain Decomposition Methods for Partial Differential Equations, 1990, Moscow, USSR
  • Eigenwertaufgaben in Natur- und Ingenieurwissenschaften und ihre numerische Behandlung, Oberwolfach, 1990 (invited)
  • XI HOUSEHOLDER SYMPOSIUM, Tylosand, SWEDEN, 1990 (invited)
  • IMACS Symp. Iterative methods in linear algebra, Brussels, 1991 (invited)
  • XII HOUSEHOLDER SYMPOSIUM, Lake Arrowhead, USA, 1993 (invited)
  • 1996 COPPER MOUNTAIN CONFERENCE ON ITERATIVE METHODS, APRIL 9-13, 1996
    A Subspace Preconditioning Algorithm for Eigenvector/Eigenvalue Computation
  • Second SIAM Conference on Sparse Matrices, October 9-11, 1996
• 1997
  • 8th Copper Mountain Conference on Multigrid Methods, April 9-13, 1997
    Uniform wellposedness of a mixed formulation of symmetric problems with rough coefficients with application to highly nonhomogeneous linear elasticity
  • Workshop in pre-conditioning eigenvalue problems, May 14-16, 1997, Argonne
    Some history of preconditioned iterative methods for symmetric eigenvalue problems. (invited)
  • Third IMACS International Symposium on Iterative Methods in Scientific Computation, July 9-12, 1997, University of Wyoming
    Necessary and sufficient conditions of well-posedness of a mixed formulation of symmetric problems
  • SIAM 45th Anniversary Meeting, July 14-18, 1997, Stanford University
    Forty years of preconditioned iterative methods for large symmetric eigenvalue problems
    at the Minisymposium Preconditioned Methods for Large Eigenproblems (organizer)
  • Tenth International Conference on Domain Decomposition Methods, August 10-14, 1997, Boulder , Colorado
    DDM for eigenproblems: eigensolvers vs. system solvers on subdomains
  • Sixth SIAM Conference on Applied Linear Algebra, October 29-November 1, 1997, Snowbird, UT
    A Subspace Preconditioning Algorithm for Eigenvector/Eigenvalue Computation
• 1998
  • A NUMERICAL ANALYSIS CONFERENCE IN HONOR OF OLOF B. WIDLUND, Fri January 23 - Sat January 24, 1998, COURANT INSTITUTE
  • Copper Mountain Conference on Iterative Methods, March 30-April 3, 1998
    Preconditioned eigensolvers - an oxymoron?
  • STATE OF THE ART IN FINITE ELEMENT METHOD July 21 --24 1998 City University of Hong Kong, Hong Kong
    Uniform Finite Element Error Estimates for Differential Equations with Rough Coefficients
  • International Symposium on Theory and Algorithms for Large Scale Matrix Problems, Dalian University of Technology, Dalian, China August 2-5, 1998
    Preconditioned eigensolvers (invited)
  • Iterative solution methods for the elasticity equations as arising in mechanics and biomechanics IMMB'98 September 28-30, 1998, University of Nijmegen, The Netherlands
    Iterative solution of the Lame equations with highly discontinuous coefficients (invited)
• 1999
  • USNCCM'99, August 4-6, 1999, University of Colorado at Boulder
    Modern Iterative Solvers for Large Symmetric Eigenvalue Problems,
    at the MiniSymposium Very Large Eigenvalue Problems (organizer)
    Domain Decomposition Methods for Eigenproblems,
    at the MiniSymposium Domain Decomposition Techniques (invited)
• 2000
  • FEM Rodeo 2000, February 25-26, 2000, TICAM, UTexas at Austin
  • SIXTH COPPER MOUNTAIN CONFERENCE ON ITERATIVE METHODS, 3-7 APRIL, 2000
    Toward the optimal preconditioned eigensolver
  • III International Workshop on Accurate Solution of Eigenvalue Problems, July 3-6, 2000, Hagen, Germany
    Eigensolvers based on polynomials of two variables (invited)
  • Finite Element Analysis and Eigenvalue Problems, Conference in Honor of the 1000000₂th birthday of John Osborn, Sept. 15-16, 2000, University of Maryland, College Park
• 2001
  • TENTH COPPER MOUNTAIN CONFERENCE ON MULTIGRID METHODS, APRIL 1-6, 2001
    Eigensolvers with multigrid preconditioners (slides)
  • PRISM'2001, May 21-23, 2001, University of Nijmegen, The Netherlands
    Uniform Finite Element Error Estimates for Differential Equations with Jumps in the Coefficients (invited)
  • Schnelle Löser für partielle Differentialgleichungen, 27.05. - 02.06.2001, Oberwolfach:
    Uniform Finite Element Error Estimates for Differential Equations with Jumps in the Coefficients (invited)
• 2002
  • CURRENT AND FUTURE TRENDS IN NUMERICAL PDE's.
    Feb 8-9, 2002, Austin, TX
  • Miniworkshop: Preconditioning in Eigenvalue Computations (organizer), 03.03. - 09.03.2002, Oberwolfach:
    The mystery of fast convergence of the locally optimal block PCG eigensolver
  • SEVENTH COPPER MOUNTAIN CONFERENCE ON ITERATIVE METHODS, March 24-29, 2002, COPPER MOUNTAIN:
    Closer to the optimal preconditioned eigensolver
    Principal Angles Between Subspaces in an A-Based Scalar Product: Dense and Sparse Matrix Algorithms ,
    jointly with Merico E. Argentati (the speaker)
  • Numerical Methods in Forward and Inverse Electromagnetic Scattering, Colorado School of Mines, June 3-7, 2002
  • Finite Element Methods: Fifty Years of Conjugate Gradients, June 11-12, 2002, Agora, Jyväskylä, Finland:
    Toward the Optimal Preconditioned Eigensolver: Locally Optimal Block Preconditioned Conjugate Gradient Method
  • Numerical Methods for Scientific Computing, June 14-15, 2002, Jyväskylä, Finland:
    Convergence of fictitious domain methods in stronger norms
  • Householder Symposium XV, June 17th - 21st, 2002, Peebles, Scotland:
    Toward the Optimal Preconditioned Eigensolver: Locally Optimal Block Preconditioned Conjugate Gradient Method (invited)
  • Butcher Symposium, November 3-4, 2002, Colorado
    Fatty Acids Homeostasis: the search for the key regulatory factors, jointly with Min Han, MCDB CU-Boulder.
• 2003
  • Meeting in honor of the 60th birthday of Professor Raytcho Lazarov, January 24 and 25, 2003, Texas A&M
  • Sixth IMACS International Symposium on Iterative Methods in Scientific Computing, University of Colorado Denver, March 27-30, 2003
  • Eleventh Copper Mountain Conference on Multigrid Methods, March 30 - APRIL 4, 2003:
    Implementation of a Scalable Preconditioned Eigenvalue Solver Using Hypre - joint with Merico E. Argentati ( slides)
  • May 3, 2003 workshop on Clustering High-Dimensional Data and its Applications, Third SIAM International Conference on Data Mining, San Francisco, CA, May 1-3, 2003
  • Eighth SIAM Conference on Applied Linear Algebra, College of William and Mary, Williamsburg, Virginia, July 15-19, 2003:
    Is there life after the Lanczos method? (slides)
  • PRECONDITIONING 2003, NAPA, CALIFORNIA OCTOBER 27-29, 2003
    Scalable Preconditioned Eigenvalue Solver in Hypre - joint with Merico E. Argentati (slides)
  • Clustering Large Data Sets Workshop
    Third IEEE International Conference on Data Mining (ICDM 2003) Melbourne, Florida, November 19 - 22, 2003:
    Modern Preconditioned Eigensolvers for Spectral Image Segmentation and Graph Bisection (slides)
  • Theory and Numerics of Matrix Eigenvalue Problems, BIRS workshop, Banff, Alberta, Canada, Novermber 22-27, 2003:
    Is there life after the Lanczos method? (slides)
• 2004
  • SIAM Parallel Processing for Scientific Computing, San Francisco, February 25-27, 2004:
    Scalable Preconditioned Eigenvalue Solver in Hypre - jointly with Merico E. Argentati (slides)
  • Eighth Copper Mountain Conference on Iterative Methods March 28 - April 2, 2004:
    Hard and soft locking in iterative methods for symmetric eigenvalue problems (slides)
  • SIAM Conference on Imaging Science, Salt Lake City, May 3-5, 2004:
    Modern Preconditioned Eigensolvers for Spectral Image Segmentation and Graph Bisection (slides)
  • NSF-IC Approaches to Combat Terrorism FY 2003 PI Workshop Arlington, Virginia June 8, 2004:
    Preconditioned Algorithms for Large Eigenvalue Problems
  • Fifth Workshop on the DOE Advanced Computational Software Collection, Lawrence Berkeley National Laboratory August 24-27, 2004
    
  • Butcher Symposium on Genomics and Biotechnology, Broomfield, CO. November 11, 2004:
    Finding functional gene clusters responsive to changes in the Monomethyl Branched-Chain Fatty Acid levels,
    jointly with Min Han (MCDB, CU Boulder).
• 2005
  • 16th International Conference on Domain Decomposition Methods, Courant Institute, New York City January 12-15, 2005:
    Preconditioned eigensolvers in Hypre and PETSc - jointly with Merico Argentati, Ilya Lashuk and Evgueni Ovtchinnikov.
  • Twelfth Copper Mountain Conference on Multigrid Methods, APRIL 3-8, 2005:
    Preconditioned eigensolvers in Hypre and PETSc - jointly with Merico Argentati, Ilya Lashuk and Evgueni Ovtchinnikov. (slides)
  • Householder Symposium XVI, 2005, Seven Springs Mountain Resort, Champion, Pennsylvania, May 23-27, 2005:
    Preconditioned Eigenvalue Solvers in Electronic Structure Calculations (invited) (slides)
  • 12th ILAS Conference Regina, Saskatchewan, Canada, June 26-29, 2005:
    Majorization for Changes in Ritz Values and Canonical Angles Between Subspaces - jointly with Merico Argentati (speaker), Abram Jujunashvili, Ilya Lashuk. Invited talk at the minisymposium " Canonical Angles Between Subspaces: Theory and Applications". (slides)
  • Eight U.S. Congress for Computational Mechanics Austin, TX, July 25-27, 2005:
    Extension Theorems for Lame Equations for Nearly Incompressible Media with Applications to Numerical Solution of Problems with Highly Discontinuous Coefficients - jointly with N. S. Bakhvalov and R. R. Parashkevov. (slides) Invited talk at the minisymposium "Homogenization: Symposium in Honor of Prof. Ivo Babuska."
    Analysis of Transmission Problems on Lipschitz Boundaries in Stronger Norms. (slides) Invited talk at the minisymposium "Domain Decomposition and Fictitious Domain Methods."
• 2006
  • Workshop on Scientific Computing, UC-Davis , February 21, 2006:
    Modern Preconditioned Eigensolvers for Spectral Image Segmentation and Graph Bisection
  • SIAM Conference on Parallel Processing for Scientific Computing CP13 San Francisco, February 22-24, 2006:
    Block Locally Optimal Preconditioned Eigenvalue Xolvers - jointly with Merico Argentati, Ilya Lashuk and Evgueni Ovtchinnikov. (slides)
  • Ninth Copper Mountain Conference on Iterative Methods April 2-7, 2006:
    Block Locally Optimal Preconditioned Eigenvalue Xolvers (BLOPEX) - jointly with Merico Argentati, Ilya Lashuk and Evgueni Ovtchinnikov. (slides)
    A priori error bounds for eigenvalues approximated by the Ritz values - jointly with Merico Argentati (the speaker). (slides)
    Steepest descent and conjugate gradient methods with variable preconditioning - jointly with Ilya Lashuk (the speaker). (slides)
  • Fast Manifold Learning Workshop William & Mary in Williamsburg, VA, April 14-15, 2006:
    Multiscale Preconditioning for Computing Eigenvalues of Graph Laplacians in Image Segmentation
  • Workshop on Algorithms for Modern Massive Data Sets Stanford University and Yahoo! Research June 21-24, 2006:
    Multiscale Spectral Graph Partitioning and Image Segmentation
  • CU Energy Initiative/NREL Symposium CU Boulder, CO Oct. 3, 2006:
    Eigenvalue solvers for computer simulation of efficient solar cell materials - jointly with Julien Langou
• 2007
  • Ninth Copper Mountain Conference on Multigrid March 18-22, 2007
    
  • Stanford 50: State of the Art and Future Directions of Computational Mathematics and Numerical Computing, March 29 - 31, 2007 Stanford University:
    Accuracy of Ritz values from a given subspace - jointly with M. E. Argentati, C. C. Paige (the speaker), and I. Panayotov.
  • Computational Partial Differential Equations TU Berlin, June 6, 2007:
    New A Priori FEM Error Estimates for Eigenvalues - jointly with John Osborn (invited) (notes)
  • Preconditioning 2007 Toulouse, France, July 9-12, 2007
  • ICIAM 07 Zurich, Switzerland, 16-20 July 2007:
    Block Locally Optimal Preconditioned Eigenvalue Xolvers (BLOPEX) (invited Minisymposium IC/MP/020/U/333 speaker)
• 2008
  • Tenth Copper Mountain Conference on Iterative Methods April 6-11, 2008:
    • Large scale parallel ab initio electronic structure calculations with the LOBPCG method (slides)- jointly with Zerah (the speaker), Bottin, and Le Roux.
    • Majorization-based convergence rate bounds of subspace iterations and the block Lanczos method (slides) - jointly with M. Argentati
    • Eigensolvers for analysis of microarray gene expression data (slides)
  • James Bramble -- Half a Century in Mathematics Texas A&M University, May 2-3, 2008:
    Gradient flow approach to geometric convergence analysis of preconditioned eigensolvers (slides) (invited speaker) - jointly with K. Neymeyr
  • Householder Symposium XVII Zeuthen, Germany June 1-6, 2008:
    Rayleigh-Ritz majorization error bounds with applications to FEM and subspace iterations (invited speaker)
  • IACM/ECCOMAS Congress Venice, June 30th-July 5th 2008:
    Eigensolvers for analysis of microarray gene expression data (slides) (Minisymposium organizer)
• 2009
  • Copper Mountain Conference on Multigrid March 22--27, 2009:
    Multigrid Eigensolvers for Image Segmentation (slides)
  • Linear and Nonlinear Eigenproblems for PDEs Oberwolfach, August 9-15, 2009 (organizer)
  • UC Butcher Symposium November 6, 2009:
    Novel data clustering for microarrays and image segmentation
• 2010
  • ELEVENTH COPPER MOUNTAIN CONFERENCE ON ITERATIVE METHODS April 4-9, 2010:
    Preconditioned gradient-type methods for computing extreme singular values - jointly with Eugene Vecharynski (the speaker).
  • Conference on Numerical Linear Algebra Austin, TX, July 19, 2010:
    Majorization, angles, and bounds for Ritz values - jointly with Peizhen Zhu (presenter).
• 2011
  • SIAM Computational Science and Engineering February 28 - March 4, 2011:
    Solving Symmetric Indefinite Systems with Symmetric Positive Definite Preconditioners - jointly with Eugene Vecharynski (the speaker). (slides)
  • FIFTEENTH COPPER MOUNTAIN CONFERENCE ON MULTIGRID METHODS March 27 - April 1, 2011:
    Multigrid absolute value preconditioning - jointly with Eugene Vecharynski. (slides)
  • Householder Symposium XVIII on Numerical Linear Algebra June 12-17, 2011:
    Preconditioned Locally Minimal Residual Method for Computing Interior Eigenpairs of Symmetric Operators - jointly with Eugene Vecharynski (the speaker).
  • Scientific Discovery through Advanced Computing (SciDAC) Denver, July 10-14, 2011
  • SciDAC Tutorials Denver, July 15, 2011

• Optimization Seminar, UC Denver March 27, 1997
  Nonlinear Optimization Methods for Symmetric Eigenvalue Problems
• CCM Seminar, UC Denver. October 6, 1997
  Necessary and sufficient conditions of well-posedness of a mixed formulation of symmetric problems
• Applied and Numerical Math Seminar, UC Denver&Boulder, October 21, 1997
  Numerical Solution of Elliptic Problems with Highly Discontinuous Coefficients
• Department of Mathematics of the University of Maryland November 13, 1997
  Numerical Solution of Elliptic Problems with Highly Discontinuous Coefficients
• Numerical Analysis Seminar, TA&MU, November 21, 1997
  Numerical Solution of Elliptic Problems with Highly Discontinuous Coefficients
• Schlumberger-Doll Research, Ridgefield, CT, January 26, 1998
  Numerical Solution of Elliptic Problems with Highly Discontinuous Coefficients Typical for Homogenization
• Colorado State University, Applied Mathematics Seminar, February 26, 1998
  Preconditioned iterative methods for large symmetric eigenvalue problems
• Optimization Seminar, UC Denver April 7, 1998
  Projection Methods in Nonquadratic Optimization with Application for Eigenvalue Problems
• CCM Seminar, UC Denver, Sept. 20, 1999
  Preconditioned CG-based eigensolvers
• Department of Mathematics - University of Texas, Austin, Sept. 28, 1999
  Numerical solution of the Lame equations with highly discontinuous coefficients
• Department of Mathematics - TAMU, Sept. 29, 1999
  Preconditioned CG-based Eigensolvers
• Department of Mathematics - University of Houston, Sept. 30, 1999
  New Preconditioned Eigensolvers
• CCM Seminar, UC Denver, Feb. 7, 2000
  Toward the Optimal Preconditioned Eigensolver
• Eigensolver
• Seminar des DFG-Sonderforschungsbereichs 393,
  Numerische Simulation auf massiv parallelen Rechnern, TU Chemnitz, June 27, 2000
  Toward the optimal preconditioned eigensolver
• Numerical Analysis groups, University of Tübingen, June 29, 2000
  Toward the optimal preconditioned eigensolver
• Courant Institute of Mathematical Sciences, September 19, 2000
  Preconditioned Eigensolvers based on polynomials of two variables
• SCCM, Stanford University, Feb. 26, 2001
  Toward the optimal preconditioned eigensolver (slides)
  Angles between subspaces
• LLNL, Scalable Linear Solvers, Feb. 28, 2001
  Optimal preconditioned eigensolvers for very large symmetric eigenproblems (slides)
• NERSC, Scientific Computing, March 2, 2001
  Optimal preconditioned eigensolvers for very large symmetric eigenproblems (slides)
• Numerical Analysis groups, University of Tübingen, May 10, 2000
  Optimal preconditioned eigensolvers for very large symmetric eigenproblems
• Institut für Praktische Mathematik, Universität Karlsruhe, May 15, 2001
  Optimal preconditioned eigensolvers for very large symmetric eigenproblems
• Service de Métrologie Nucléaire, Université Libre de Bruxelles, May 16, 2001
  Optimal preconditioned eigensolvers for very large symmetric eigenproblems
• Mathematical Institute, Utrecht University, May 17, 2001
  Optimal preconditioned eigensolvers for very large symmetric eigenproblems
• Institute of Scientific Computing, Swiss Federal Institute of Technology Zurich June 5, 2001
  Optimal preconditioned eigensolvers for very large symmetric eigenproblems
• Department of Mathematics - TAMU, Feb 6, 2002
  Closer to the optimal preconditioned eigensolver
• Department of Mathematics University of California Berkeley, April 26, 2002
  Challenges of Numerical Solution of Elliptic Problems with Highly Discontinuous Coefficients
• Sandia National Laboratories, Computational Sciences, Computer Sciences, and Mathematics Center, October 17, 2002
  LOBPCG Eigensolver in Hypre
• Moscow State University, VMK, December 16, 2002
  How and why to get a Ph.D. in applied mathematics from the University of Colorado in Denver (In Russian).
• Institute of Numerical Mathematics Russian Academy of Sciences, December 17, 2002
  Optimal preconditioned eigensolvers
• American Center in Moscow, December 18, 2002
  How and why to get a Ph.D. in applied mathematics from the University of Colorado in Denver (In Russian).
• Computer Science & Engineering, University of Nevada, Reno, February 20, 2004
  Modern Preconditioned Eigensolvers for Spectral Image Segmentation
• LLNL, February 23, 2004
  Locally optimal block preconditioned conjugate gradient method for electronic structure calculations
• UC Denver Wildfire Project Work Meetings, May 18, 2005
  Parallel matrix datastructures in LOBPCG
• Johannes Kepler University Linz , Sept 5, 2005
  Locally Optimal Block Preconditioned Conjugate Gradient method
• Lawrence Berkeley National Laboratory, February 17, 2006
  Preconditioned Eigenvalue Solvers in Electronic Structure Calculations (slides)
• Kolloquium der Arbeitsgruppe Modellierung, Numerik, Differentialgleichungen, Institute of Mathematics, TU-Berlin, June 12, 2007
  Mathematical and Computer Science Aspects of Eigenvalue Computations.
• Universität Rostokc Institut fürMathematik, June 13, 2007
  Majorization for Changes in Ritz Values and Canonical Angles Between Subspaces
• Universitat Politècnica de València D. Sistemes Informàtics i Computació , July 2, 2007
  Block Locally Optimal Preconditioned Eigenvalue Xolvers (BLOPEX)
• Rice University, May 1, 2008
  Majorization-based convergence rate bounds of subspace iterations and the block Lanczos method - jointly with M. Argentati
• CEA, France, June 23, 2008
  Eigenvalue solvers for data clustering and image segmentation
• LANL July 23, 2009:
  Multigrid Eigensolvers for Image Segmentation (slides)
• UC Davis Multigrid Eigensolvers for Image Segmentation (slides)